This navy halter dress, although it's quite a splurge, is pure perfection with its sexy, sheer overskirt and keyhole cutout in the back. Love this floor-length number but want a more casual look? Drop your hair down and wear sandals instead of going for an updo and donning heels.French Connection Sheer Overlay Halter Maxi Dress in Nocturnal, $268, Nordstrom.com. -Cosmopolitan.com
Night Moves 6758 on Song Costa - Dramatic Night Moves 6758 is a one-shoulder chiffon gown with style to spare! The draped-look bodice features a crystal midriff detail and the back has a stunning chiffon flyaway panel.